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[PATCH] rb532: provide GPIO_BUILTIN_NR and irq_to_gpio/gpio_to_irq

Subject: [PATCH] rb532: provide GPIO_BUILTIN_NR and irq_to_gpio/gpio_to_irq
From: Florian Fainelli <>
Date: Thu, 11 Sep 2008 17:48:00 +0200
Cc: Linux MIPS Org <>
Original-recipient: rfc822;
This patchs defines the number of built-in the GPIOs present
on the SoC as Documentation/gpio.txt recommends to do.
Define irq_to_gpio/gpio_to_irq to return the right values so that
it fixes a compilation error on drivers/gpio/gpiolib.c
when enabling debugfs.

Signed-off-by: Florian Fainelli <>
diff --git a/include/asm-mips/mach-rc32434/gpio.h 
index 77ac353..ff40eab 100644
--- a/include/asm-mips/mach-rc32434/gpio.h
+++ b/include/asm-mips/mach-rc32434/gpio.h
@@ -14,16 +14,16 @@
 #define _RC32434_GPIO_H_
 #include <linux/types.h>
+#include <asm-generic/gpio.h>
-#define gpio_get_value __gpio_get_value
-#define gpio_set_value __gpio_set_value
-#define gpio_cansleep __gpio_cansleep
+#define NR_BUILTIN_GPIO                32
-#define gpio_to_irq(gpio)      IRQ_GPIO(gpio)
-#define irq_to_gpio(irq)       IRQ_TO_GPIO(irq)
+#define gpio_get_value __gpio_get_value
+#define gpio_set_value __gpio_set_value
+#define gpio_cansleep  __gpio_cansleep
-#include <asm-generic/gpio.h>
+#define gpio_to_irq(gpio)      (8 + 4 * 32 + gpio)
+#define irq_to_gpio(irq)       (irq - (8 + 4 * 32))
 struct rb532_gpio_reg {
        u32   gpiofunc;   /* GPIO Function Register

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